CVE-2021-3569

MEDIUM
5.5
CVSS Score
Published: June 3, 2021 at 11:05 AM UTC
Updated: June 17, 2026 at 04:05 AM UTC
2 products affected across 2 vendorsEnterprise LinuxLibtpms

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%

Description

A stack corruption bug was found in libtpms in versions before 0.7.2 and before 0.8.0 while decrypting data using RSA. This flaw could result in a SIGBUS (bad memory access) and termination of swtpm. The highest threat from this vulnerability is to system availability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.7.20.7.3 ≤ v < 0.8.00.7.20.8.0
Affected range stops below 0.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.8.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_MISCIssue TrackingPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1964358

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-120CWE-787

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